I want to be prepared for when my trc 935 arrives next week. I am sure I will need to do some clean up. What do you all use to clean up/de-oxidize connections, slider/knob mechanisms etc? Also, what are some things to check for when opening up this box. I am fairly proficient with electronics but have never worked on one of these. Any tips and suggestions are much appreciated. Esp grateful to any 935 owners with specific tips. Thanks everyone and sorry for such a basic question, just want to be blasting this thing asap